package cn.good.yan;

import com.netflix.hystrix.contrib.metrics.eventstream.HystrixMetricsStreamServlet;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.cloud.client.circuitbreaker.EnableCircuitBreaker;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
import org.springframework.context.annotation.Bean;

/**
 * SpringBoot项目 - 主启动类  - 服务端1
 * 1.Hystrix  t1 正常请求 的服务端 - 服务1
 * 2. 配置网关的请求
 *  @EnableCircuitBreaker 该服务 需要服务监控
 * @author shengren.yan
 * @create 2023-09-27
 */
@EnableCircuitBreaker
@EnableEurekaClient //本服务启动后会自动注册进eureka服务中
//@MapperScan("com..**.mapper")
@MapperScan("cn.good.yan.mapper")
@SpringBootApplication
public class BootApplication {

     public static void main(String[] args) {
        SpringApplication.run(BootApplication.class, args);
     }

    /**
     * 此配置是为了服务监控而配置，与服务容错本身无关，springcloud升级后的坑
     * ServletRegistrationBean因为springboot的默认路径不是"/hystrix.stream"，
     * 只要在自己的项目里配置上下面的servlet就可以了
     */
    @Bean
    public ServletRegistrationBean getServlet() {
        HystrixMetricsStreamServlet streamServlet = new HystrixMetricsStreamServlet();
        ServletRegistrationBean registrationBean = new ServletRegistrationBean(streamServlet);
        registrationBean.setLoadOnStartup(1);
        registrationBean.addUrlMappings("/hystrix.stream");
        registrationBean.setName("HystrixMetricsStreamServlet");
        return registrationBean;
    }

}